Flask



FIG. 1 is a front perspective view of the flask, illustrating my newdesign;

FIG. 2 is a front facing view thereof, the rear facing view being amirror image;

FIG. 3 is a left side view thereof, the right side view being a mirrorimage;

FIG. 4 is top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines shown are included for the purpose of illustrating theunclaimed portions of the article and form no part of the claim.

The ornamental design for a flask, as shown and described.